pH measures the acidity/alkalinity of a solution on a scale of 1 ~ 14 pH, with 1 being the most acidic and 14 being the most alkaline or basic. pH is a common measure of water quality used in environmental testing, food & beverages, cosmetics, pharmaceuticals and other fields. Four basic styles of pH meters are available for varying applications: Pens, Portable Meters, Data Loggers, and Benchtop meters.

Easy to carry, simple to operate and sufficient for most field pH testsThese large LCD display pH pens are ideal when you are looking for highly stable and accurate readings in the field. Designed for simple one-hand operation. Automatically calibrates to pH 4, 7, 10 buffers and can be adjusted to recognize non-standard buffers as well. These pH pens offer unbeatable solutions for applications such as waste-water, surface water, aquaculture, hydroponics, pools, and education. They each feature hold function, and auto power off with low battery indicator. The cases are IP65 waterproof, and will float if accidentally dropped into the water. They come with 4 button-cell batteries and a built-in electrode kept moist with a protective cap.850050 - Large Display pH Pen Has a Range of 2~12 with an Accuracy of 0.3 pH and is the perfect instrument for economical spot sampling of pH.850051 - Large Display ATC pH Pen Has a Range of 0~14 with an Accuracy of 0.2 pH and is the right instrument for spot sampling of pH and temperature. Displays temperature in both C and F.850052 - Large Display ATC 0.01 pH Pen Has a Range of 0~14 with an Accuracy of 0.05 pH and is the ideal instrument when you need laboratory accuracy in the field for sampling of pH and temperature. Displays temperature in both C and F. Dimensions: 6" 1" 1" (165 38 38 mm)Weight: 2.3 oz (65 g)

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